John d



(No Moel.) u Y J. E. WARREN. SPECTACLE EYE SHIELD.

No; 4Q2,l25 Patanted Feb. 2l, 1893..

UNiTrLD STATES PATENT Fries.

.lOllN D. lVARREN, OF SOUTH FRAMINGIIAM, ASSIGNOR OF ONEJIALF TO EDWARD G. STEVENS, OF CLINTON, MASS'CHUSET'IS.

SPECIFICATION forming part of Letters Patent No. 492,125, dated February 21, A1893.

YEl-lll 1191156115011 filed lpril 16, 1892, Serial No. 429,434. Divided and this application tiled September 19, 1892. Serial No.

446,241. (No model.)

To @ZZ whom, it may concern,.-

le it known that I, JOHN D. WARREN, a citizen of the United States, residing at South Framingham, in the county of Middlesex and State of Massachusetts, liaveinvented a newr and useful Improvement in Spectacle Eye- Shields, of which the following is a specificatiou.

'lhis application coversa division of an ap- 1o plication tiled by me April16,1892, Serial No.

429,434, for a method of making, and an improved eye-shield.

'lhe aim of this invention is to produce a new and improved eye-shield, and to this end,

x5 the invention consists of the device described and claimcdin this specification, and illustrated in the accompanying drawings, in which Figure 1 is a rear elevation of my complete ce device, Fig. is an elevation of the sheetnietal hlank from which my device is made, Fig. 23 is a'plan of my complete device, Figs. t and 5 are views illustrating how cach linger of the blank is bent to hold both the mica and 25 the cushions, and Figs. G and 7 are views show- 3o shown in liig. 2, having fingers ll projecting therefrom, and projections O to which an elastic cord D may be secured to hold the device in place on the head. Laid on the rim A are the pieces of mica E, which preferably are two in number, and are cut out ot' the shape shown in Fig. G. I preferably use two pieces of mica, though of course, a single piece could be used, and made to extend to cover the entiro space of the rim. A cushion F is laid 4o around each part of the shield, and this cushion may be made of felt, rubber, or any suitable material.

'lhe way the. device is iliade or put together is as followsz-The pieces of mica are rst .aid on the blank, and the lingers l are bent back as atb to hold the mica in place, and the lingers are then nippcd tightly in this position. The lingers are then bentup as at b',

and the cushion or feltis laid around on the metal, and then the ends h2 of the tingers are bent around to hold the same, and, if desired, the felt may have suitable notches f to receive the lingers. Thus, I provide a shield which is extremely simple and easy of manufacture, and one that is constructed entirely of elastic or fiexible material, whereby the same may be easily bent to tit or conform to the face of the user.

Mica is admirably adapted for eye-shields of this character, as the same is of very light weight, fiexibleand tenacious; but mica has some very serious disadvantages, among which may he noted that the surface of the same; is very easily scratched and marred, and hence, after considerable use, the same becomes complet-ely blurred, and unfit for use. Further, mica of good quality, cannot he produced in some colors desirable for use in eye-shields, notably' blue and green, audit is one end of my invention to remedy these defects. 'lo accomplish this, 1 coat the mica with a lilm or Acoat-ing of some impervious transparent or translucent material, and allow the same to dry to form a. protecting mediuin for the mica, which film will protect the mica from lieing scratched, and from aking 0r chipping oft.

I preferably coatthe mica on both sides, by dipping the mica in the solution, and allowing the same to dry; though, of course, the mica may be coated only on one side without departing from the scope of my invention. For this coating, l may use any desired compound that will give the desired result, such as white varnish, oxidized linseed oil, dse.; but I have found in the course of my experiments, that acomponnd commercially known as crystalline is admirably adapted for this purpose.

When it is desired to color the mica diierently from which it is nathrally obtained, I may do so in three ways: jrst, by coating the mica, preferably on both tsides, with the desired dye; second,'by coating the mica, preferably on both sides witht-he desired dye, allowing the same to dry, and then coating the same with the film; and third, by dissolving: `the dye in the compound that is to be applied `to the mica, and then applying this compound.

The second process is the preferred way of applying the dye. In this way, I can produce nu eye-shield nf any desired color, and one that will wear a lon'br time without becoming scratched, marred, or blurred.

llO

.what I clafim, 35

The details of the invention herein described may be greatly varied by a skilled me: charliewithout departing from the scope'ot, my invention as expressed in the claims.

" Having thus fully described my invention, and desire to secu re by Letters Patent, is'- `1. An eye-shield made of mica, havin-g n.' transparent or translucent protecting coating or film, substantially ns described.

An e 'e-shield made of mien lnivinfr n witnesses.

JOHN l). WARREN. \Vitnesses:

F. F. RAYuoND, 2d, M. LYNCH. 

